Subject: Re: eap recording broken?
To: Current Users <current-users@NetBSD.ORG>
From: Jukka Marin <>
List: tech-kern
Date: 10/11/2006 20:50:32
On Wed, Oct 11, 2006 at 08:14:59PM +0300, Jukka Marin wrote:
> I'm trying to bring a -current system into production use.  One of
> the problems I'm seeing is that recording from Ensoniq AudioPCI
> card produces 8 wrong samples at regular intervals which generates
> a ticking background noise in the recorded audio.  The samples
> seem to be part of the recorded audio signal, they just come from
> a wrong place.  The number of wrong samples always seems to be 8.

It seems the problem is visible at 2400 sample intervals.  I checked
the ai.blocksize in audio_info_t and it is 9600 (2400 samples * 2
channels * 2 bytes/channel = 9600 bytes).  So, the problem occurs
once per audio blocksize.